practice squad linebacker larry brown was killed. the two had been friends since their college days. brent released a statement, saying i am grief stricken for his family, our teammates and friends. i will live with this horrific, tragic loss every day for the rest of my life. >>> dc police are on the hunt for two men who hailed a cab and knocked out the driver. cab drivers we spoke to didn't seem surprised. what's being done to protect them? >> reporter: a cab driver knocked unconscious and robbed of his cell phone and cash. it happened just before midnight friday. police say the suspects were passengers, riding in the back seat. at some point, the men put on masks. when the cab was stopped along the 900 block of euclid street northwest, they attacked the driver from behind, robbed him, then took off on foot. other drivers we spoke with were disturbed, but not surprised. >> you don't really have much protection when you do this business. >> reporter: just last month, two teenagers were charged with shooting and killing a taxi driver